72256256 has 36 divisors (see below), whose sum is σ = 152723592. Its totient is φ = 34000896.

The previous prime is 72256229. The next prime is 72256291. The reversal of 72256256 is 65265227.

It is a super-2 number, since 2×72256256² = 10441933062275072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3950 + ... + 12653.

It is an arithmetic number, because the mean of its divisors is an integer number (4242322).

Almost surely, 2^72256256 is an apocalyptic number.

It is an amenable number.

72256256 is an abundant number, since it is smaller than the sum of its proper divisors (80467336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72256256 is a wasteful number, since it uses less digits than its factorization.

72256256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16636 (or 16622 counting only the distinct ones).

The product of its digits is 50400, while the sum is 35.

The square root of 72256256 is about 8500.3679920342. The cubic root of 72256256 is about 416.5097301955.

The spelling of 72256256 in words is "seventy-two million, two hundred fifty-six thousand, two hundred fifty-six".